On Tue, Aug 7, 2012 at 7:04 AM, Dan Burton <danburton.em...@gmail.com> wrote: > As a side note, since the code base is relatively small, it can also serve > as a simple demonstration of how to use a cabal flag > in conjunction with CPP to selectively include swaths of code > (see Control/Monad/Tardis.hs and tardis.cabal).
Eep, your API changes based on compile-time settings. I think this is a bad idea, because other packages cannot depend on a flag, so realistically other packages cannot depend on the instances existing, so they're nearly useless. UndecidableInstances is excessively maligned and usually fine anyway. If it compiles, it won't go wrong. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
